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Submission #625269

# Submission time Handle Problem Language Result Execution time Memory
625269 2022-08-09T17:57:39 Z chonka Senior Postmen (BOI14_postmen) C++17
100 / 100
 417 ms 70216 KB 
#include<bits/stdc++.h>
using namespace std ;
typedef long long ll ;
// mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

const int MAXN = 5e5 + 7 ;
bool used[ MAXN ] , aux[ MAXN ] ;
vector < int > v[ MAXN ] ;
pair < int , int > hh[ MAXN ] ;
vector < int > ord , stk ;

void dfs ( int x ) {
    while ( v[ x ].empty ( ) == false ) {
        int id = v[ x ].back ( ) ;
        v[ x ].pop_back ( ) ;
        if ( used[ id ] == false ) {
            used[ id ] = true ;
            dfs ( hh[ id ].first + hh[ id ].second - x ) ;
        }
    }
    ord.push_back ( x ) ;
}

void solve ( ) {
    int n , m ; cin >> n >> m ;
    for ( int i = 1 , x , y ; i <= m ; ++ i ) {
        cin >> x >> y ;
        hh[ i ] = { x , y } ;
        v[ x ].push_back ( i ) ;
        v[ y ].push_back ( i ) ;
    }
    dfs ( 1 ) ;
    for ( auto x : ord ) {
        if ( aux[ x ] == false ) {
            aux[ x ] = true ;
            stk.push_back ( x ) ;
        }
        else {
            cout << x ;
            while ( stk.back ( ) != x ) {
                int y = stk.back ( ) ; stk.pop_back ( ) ;
                cout << " " << y ;
                aux[ y ] = false ;
            }
            cout << "\n" ;
        }
    }
}

int main ( ) {
    ios_base :: sync_with_stdio ( false ) ;
    cin.tie ( NULL ) ;
    int t = 1 ; // cin >> t ; 
    while ( t -- ) { solve ( ) ; }
    return 0 ;
}

Subtask #1
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 6 ms 12068 KB Output is correct
3 Correct 6 ms 11988 KB Output is correct
4 Correct 7 ms 12356 KB Output is correct
5 Correct 6 ms 12116 KB Output is correct
6 Correct 8 ms 12500 KB Output is correct
7 Correct 11 ms 13372 KB Output is correct
8 Correct 7 ms 12244 KB Output is correct
9 Correct 34 ms 20224 KB Output is correct
10 Correct 7 ms 12288 KB Output is correct
11 Correct 7 ms 12244 KB Output is correct
12 Correct 38 ms 20636 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11988 KB Output is correct
2 Correct 6 ms 11988 KB Output is correct
3 Correct 6 ms 11988 KB Output is correct
4 Correct 7 ms 12372 KB Output is correct
5 Correct 7 ms 12116 KB Output is correct
6 Correct 7 ms 12500 KB Output is correct
7 Correct 12 ms 13448 KB Output is correct
8 Correct 7 ms 12244 KB Output is correct
9 Correct 34 ms 20276 KB Output is correct
10 Correct 7 ms 12244 KB Output is correct
11 Correct 7 ms 12312 KB Output is correct
12 Correct 41 ms 20548 KB Output is correct
13 Correct 64 ms 23424 KB Output is correct
14 Correct 51 ms 20220 KB Output is correct
15 Correct 48 ms 21888 KB Output is correct
16 Correct 56 ms 23540 KB Output is correct
17 Correct 53 ms 17860 KB Output is correct
18 Correct 53 ms 21176 KB Output is correct

Subtask #3
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 12000 KB Output is correct
2 Correct 6 ms 12020 KB Output is correct
3 Correct 6 ms 12084 KB Output is correct
4 Correct 8 ms 12372 KB Output is correct
5 Correct 7 ms 12116 KB Output is correct
6 Correct 10 ms 12500 KB Output is correct
7 Correct 11 ms 13368 KB Output is correct
8 Correct 7 ms 12220 KB Output is correct
9 Correct 35 ms 20292 KB Output is correct
10 Correct 7 ms 12288 KB Output is correct
11 Correct 7 ms 12244 KB Output is correct
12 Correct 38 ms 20600 KB Output is correct
13 Correct 54 ms 23444 KB Output is correct
14 Correct 50 ms 20268 KB Output is correct
15 Correct 47 ms 21828 KB Output is correct
16 Correct 55 ms 23476 KB Output is correct
17 Correct 53 ms 17856 KB Output is correct
18 Correct 52 ms 21204 KB Output is correct
19 Correct 417 ms 70180 KB Output is correct
20 Correct 358 ms 54216 KB Output is correct
21 Correct 345 ms 61756 KB Output is correct
22 Correct 392 ms 70216 KB Output is correct
23 Correct 153 ms 52180 KB Output is correct
24 Correct 400 ms 41912 KB Output is correct
25 Correct 391 ms 58908 KB Output is correct